...帳戶,包括內容創建、發佈和與關注者的互動 - 實施有效的策略以提高品牌知名度並吸引更多關注者 - 監控和分析關鍵指標以衡量行銷活動的成功 - 與我合作開發和執行創意和引人入勝的營銷活動 技能和經驗: - 在管理Instagram帳戶和取得可衡量的結果 - 深入瞭解 Instagram 的演算法、最佳實踐和最新趨勢 - 對社交媒體行銷原則和策略有深刻的理解 - 精通內容創作和平面設計 - 出色的溝通和協作技巧 - 跟蹤和分析關鍵績效指標的分析思維 預算: - 我這個專案的預算在 500 美元到 1000 美元之間。如果你有技能和經驗來支援我的Instagram行銷工作,我很想聽聽你的意見。請提供您以前工作的範例,並讓我知道您如何説明我實現我的社交媒體營銷目標。 所需技能 網路行銷 社交網路 臉書行銷 社交媒體行銷 -- Project Description: Social Media and Google Marketing Support I am looking for a skilled freelancer who can provide support for my Instagram marketing efforts. Must speak Chinese and English fluently. Platforms: - Instagram Responsibilities: - Management of my Instagram account, including content creation, posting, and engagement with followers - Implementing effective strategies to increase brand visibility and ...
...級位者~有段者~高段者など、将棋プレイヤーの棋力を診断した上で次の段級にステップアップするために必要な能力を分析し最適なトレーニング・自己学習の機会を提供することでプレイヤーの棋力向上を促進します。 第一段階としてこのプロジェクトではアプリ開発の環境整備と最低限の機能を実装したα版構築を目標とします。 【 依頼内容 】 ・開発内容: 1.iOSアプリ開発環境構築 -github上で複数人でのアプリ開発環境・ソースコード共有環境の構築 -iOSアプリ開発Developer 登録、 α 版アプリのApp Store 登録 2.棋力向上将棋アプリα版構築 ①Top Menu 画面構築 -トレーニングメニュー選択画面構築 ②将棋棋譜検討GUI構築 -将棋盤面GUI、将棋のルールに沿った指し手の動作機能構築 -コピー&ペーストによる棋譜入力(CSA形式) -APIから受け取った指し手ごとの検討結果表示 -各局面における指し継ぎ、検討ボタンの実装 ③アプリからのサーバーAPI連携実装 -棋譜をAPI連携し検討結果の受け取り -各局面をコード形式に変換しAPI連携、検討結果受け取り ・使用言語:Objective-C 【用意してあるもの】 ・仕様書:各画面のワイヤーフレーム・API仕様などを準備予定 ・サーバー、ドメイン: GCP Cloud Runを利用予定 ・デザイン:未定、デザイナーが必要であれば応相談
...わせます。 プラットフォームは、ユーザーが選択したBGM、アップロードされたビデオ、事前にレンダリングされたビデオセグメントを含むすべてのアセットを、友人や家族と共有できる1つの最終ビデオ(mp4)にまとめます。 動的なビデオテンプレートに変換されるカテゴリ別に整理された100を超える事前レンダリングされたビデオがあります。これらのテンプレートはユーザーが選択します。ユーザーは、各テンプレートの開いているセグメント内に自分の個人的なビデオを記録するように求められます。 沈黙とノイズの検出、デシベルレベルの決定と調整などの概念の経験が必要です。 責任 新しいビデオ編集と機能のアイデアのプロトタイプを作成します(管理者とエンドユーザーがレイヤーとタイムラインでビデオアセットを表示するためのビデオ編集ダッシュボード) 最前線のビデオ編集技術である新しい技術を探る 新機能の設計、APIの作成、デバッグ 製品、設計、モバイルおよびWeb開発、サーバー側エンジニアリングを代表するチームメンバーと部門間でコラボレーションします アプリを維持し、コミュニティに耳を傾け、発生する問題を修正します スキル:Node.js、C ++ Re、OpenCV、Python、React Native
...controlled from the server using APIs - Smart Meter is designed to pass UL and CE requirements (obtaining the certifications is not part of this project) Please only apply to the job posting if you have relevant prior experience. Submit your portfolio or past work to be considered for the job. ====Google翻訳テキスト==== 私たちは、次の要件を満たした消費電力スマートメーターを設計およびプロトタイプ化する電気およびハードウェアエンジニアを募集しています。 -スマートメーターは高電圧(240ボルト)用に設計および構築されています -スマートメーターは、WiFi接続を使用してサーバーに電力使用量を送信する接続(IOT)デバイスです -スマートメーターは、APIを使用してサーバーから制御できます -スマートメーターは、ULおよびCE要件に合格するように設計されています(認証の取得はこのプロジェクトの一部ではありません) 関連する以前の経験がある場合のみ、求人公募に応募してください。 あなたのポートフォリオまたは過去の仕事を提出して、その仕事を検討してください。
找在地台灣人做外匯在 google上的sem 及設定GA 需有相關經驗 有基本關鍵 詞提供
複数のプロジェクトで作業するWeb開発者を探している Fukusū no purojekuto de sagyō suru u~ebu kaihatsu-sha o sagashite iru gū.
日本代表購入サイトを作りたいので誰か似たサイトを作った経験があれば是非申し込んでください 条件: ショッピングサイト大手3社(Amazon、楽天、Yahoo!)のAPIの利用な方
私はAndroidとiOSの両方のアプリが必要です。 私はすでにそれのためのデザインとサンプルのWebサイトを持って、私はそれを構築する必要があります。 また、AdminコントロールパネルとWeb APIを作成する必要があります。 2月中に完了する必要がありますので、私は専門家のチームを探しています。 私はインタビューで詳細を提供します。 ありがとうございました。
Google Play Developer API ???????????????????????????????????????????? (1) ?????? A. Google Play Developer API ?????????????????? ??????????????????Google play Store????????????????????????????????????????????????????????????????? ? ??????????????????????????????(????????https/ajax??) ? ??????????????????? B. A??????????????????????????? ?????????????????????????????????????????????????????????????? C. ??????????????? Google Play Store???????????????APK??????????????????????????????????????????????????????????????????????? ? ??????????APK/???????????? ? ????????????????????????? ? ??????????????????????????? (2) ?????????????? ???????A/B/C???????????????????????????????????????????????????????????? ????????????(1)???????...
Google Play Developer API ???????????????????????????????????????????? (1) ?????? A. Google Play Developer API ?????????????????? ??????????????????Google play Store????????????????????????????????????????????????????????????????? ? ??????????????????????????????(????????https/ajax??) ? ??????????????????? B. A??????????????????????????? ?????????????????????????????????????????????????????????????? C. ??????????????? Google Play Store???????????????APK??????????????????????????????????????????????????????????????????????? ? ??????????APK/???????????? ? ????????????????????????? ? ??????????????????????????? (2) ?????????????? ???????A/B/C???????????????????????????????????????????????????????????? ????????????(1)???????...
...と 3. 海外ゲームタイトルであっても取得可能であること 4. 1日に1回バッチを回した際、以前に取得したことがない記事をリストとして取得できること 5. 記事のタイトル・サムネイル・記事本文の一部を取得すること ■ システム要件 1. PHP + MySQLで構築すること 2. PHP5.3で推奨されていない表現を用いないこと 3. Cronによって動作すること 4. プログラムを動かすサーバー OR dbサーバーに対して必要以上の負荷をかけないこと ■ 納品物については以下の通りとなります 1. プログラム本体の納品(PHP) 2. データの格納先DB-Tableの納品(SQLクエリ) ■ 応募条件 1. 応募時にどのような方法で実現する予定なのかを簡潔に明記してください (Ex. TwitterSerch API と Bing Serch APIを用いて実現します、など) ▽参考Webサイト サイト名:スマートニュース/newspicksなどのバックエンド ▽使用するプログラミング言語/ツール/特殊技術(テクノロジー) ・PHP(5.3) ・MySQL ▽注意点・禁止事項 ※ 他で登録されているデザインや商標の転用など、他社の知的財産権を侵すこと ※ 商用利用できないライセンスのプログラムを用いること ※ ▽その他コメント ※実際のWebサイト開発/アプリケーション開発の進め方・別途詳細は、 クラウドワークスのメッセージでやりとりして決められればと思います。 ※マイルストーン払いにも対応いたします。
virtuemart3のショッピングカートのカスタム支払いモジュールが必要です。この支払いモジュールは、ローカル支払プロセッサのAPIと統合されます。すべて必要なファイルを開発者に提供します。 Joomla、Virtuemart3.0.9、PHP5.5を3.4.1 APIプロセッサはヤマトクロネコ「クロネコwebコレクト」。API方式のマニュアルは日本語で書いております。 APIのPDFマニュアルがとても大きかったですが、アップロード出来ませんでした。宜しければ送りします。
ヤフオクYahoo Api を使用するウェブサイトの作成が必要。 このサイト(fromjapan. co. jp)と同様なシステムをつくるのは目的。デザインはこのサイトopennippon. comと同様なもの。 ヤフーオークション(Yahoo Auction)の情報を他国語に翻訳、カテゴリーの参照ができる、コスト(送料・手数料など)計算、ユーザーのアカウントページ、パイパルとカード(日本国内システム)の支払いを可能にするモジュール、お勧めカテゴリー、顧客の意見のモジュール、各国語のポップアップお問い合わせフォーム。 既存の出来上がったシステムがあれば、一番いいです。今後のサポートも別料金で依頼します。
=== project summary === Emails from Google Alert are registered on a table of MySQL everyday. We need PHP script that read these emails via cron, and auto post as wordpress article. On front-page, the website should have 30 new articles. And other article's link are needed on pages that have 30 links. We also need sitemap of all articles for visitors and google (xml). For design, wordpress default template is OK. But we need responsive design, we'll check under 320px, 640px and PC's resolution of width. === required pages === Front page New articles from 31 to 60 New articles from 61 to 90 (From 91, follow these URL) Article's detail Sitemap
We are seeking a highly skilled and experienced Mobile Application Developer to lead the development of Naivigation, an innovative AI-powered boating assistant application designed to revolutionize the boating experience. The ideal candidate will possess a strong background in mobile app development, AI integration, and the ability to work independently on a project from conception to launch. I am located in the Eastern Time Zone of the United States and if you are located elsewhere, you must be able to work with us when needed from 1 PM to 12 AM (New York - ET). Individuals seeking this position should only apply and sales reps or business development reps should not apply. We are only seeking to work with one to three people maximum and agencies should not apply. Key Respons...
I'm in need of a skilled developer who's proficient with Next Js and Medusa.js. The project involves implementing e-commerce functionality and integration with external APIs. Your responsibilities will include: - Implementing e-commerce functionality: You will be required to set up a complete e-commerce system in Medusa.js. - Integrating external APIs: I need you to integrate the project with a payment gateway API and a shipping API. - Payment Gateway API: The payment gateway API should support credit card, Apple Pay, and Stripe payment methods. If you're a talented developer with experience in e-commerce development and API integration, and you're confident in your abilities with Next Js and , please reach out. Your co...
Join our team as a Full Stack Developer where you will utilize your expertise in React, , Node.js, and MongoDB to develop cutting-edge web applications. Responsibilities: Develop and maintain front-end features using React and Next.js. Build back-end services with Node.js and manage databases with MongoDB. Ensure application performance, responsiveness, and scalability. Requirements: Proficient in JavaScript, React, , Node.js, and MongoDB. Experience with RESTful APIs and JSON Web Tokens. Strong problem-solving skills and attention to detail. We Offer: Competitive salary and benefits. Flexible work hours and remote opportunities. A dynamic and supportive work environment.
I need some junior Android developers for Long term I need from Pakistan or India I need work at low budget for long term
I need a seasoned developer to create a website primed for Google News. Your task includes setting up Google Publisher Centre, Google AdSense, Google Console, and Google Analytics. This entails: - Ensuring the website is in accordance to Google News guidelines - Integration of relevant Google services for better website functionality - Focus on global news content provision - Mechanisms to generate revenue through ads - Tools to track website traffic Skills: - Expertise in setting up Google services - Incredible attention to detail - Proficient in SEO - Experience in news websites would be an advantage Your role will be from start to finish, and your job would revolve around equipping the site to allow me to create my own...
We are a dev team and seeking a highly experienced individual dev with in-depth proficiency in Laravel, Vue, and Flutter. Your responsibility will comprise the rebranding and extending of existing Codecanyon scripts. - **Script Rebranding**: I need a meticulous freelancer able to successfully rebrand scripts to brands of clients. - **Extending Scripts**: Your tasks also include extending Codecanyon scripts by adding extra functionalities, ensuring consistent, flawless operation , implementing APIs and adding the functionalities in the existing flutter app, testing, fixing any bugs to ensure smooth operations of the system. Pay : 1. INR1200/day or fixed amount as decided by our project managers, for 8 hours of work on anydesk/github for adding functions 2. INR 2000/project for rebrand...
I am looking for a HubSpot developer to assist with a custom development project. The ideal candidate will have experience with custom coding, custom modules, and API integrations within the HubSpot platform. Key Requirements: - Custom Coding: I need a professional who can handle custom coding within the HubSpot platform. - Custom Modules: The project involves creating custom modules and integrating them seamlessly with the existing HubSpot setup. - API Integrations: The developer should be skilled in setting up API integrations within HubSpot. Ideal Skills and Experience: - HubSpot Development: A strong background in HubSpot development and customization is essential for this task. - Custom Coding: Experience with custom coding in HubSpot. - API...
I'm in need of a skilled React Developer to work at our Delhi office. This project is focused on the development of a SaaS platform. The key tasks involved include: - **Frontend Development:** - Crafting and maintaining user-friendly interfaces. - Ensuring high performance on mobile and desktop. - Responsive Design - **Integration with Backend APIs:** - Collaborating with our backend team to connect frontend to backend API's. We are building a Software as a Service project. The ideal candidate should have a strong background in React development, particularly in the context of creating SaaS applications. Experience with integrating applications with backend APIs. Prior experience in developing applications in a similar industry will be a plus. Please n...
I am on the lookout for a proficient Codeigniter developer who can skillfully customize existing Codeigniter applications. I am not detail-specific about the tasks, but be assured, your role will involve a mix of front-end design customization, custom module development, and database integration. Key Requirements: - Demonstratable experience in customizing existing Codeigniter applications. - Experience in frontend design customization, database integration and developing custom modules. - Database integration skills. - Proven track record in Codeigniter. In your application, rather than included detailed project proposals or past work, focus on your demonstrable experience in the fields mentioned above. I'm looking for someone who can prove they have the skills and experie...
I'm in need of a .NET developer with varied experience on the framework. The project requires multiple functionalities such as database integration, user authentication, and third-party API integration. Your application should demonstrate your past work in .NET, as well as your experience in the field. Please provide a detailed project proposal to give an idea of how you plan to approach this project. If you're well-versed in the .NET Framework 4.0, 4.5 or 4.8, this could be a great opportunity for you.
I'm looking for NextJS & Firebase experts to build a dynamic website with appointment booking functionality for a small, local business. Key Responsibilities: - Develop a medium-sized website using NextJS, Firebase, Twilio, Google Calendar, Git, and PayPal - Use modern frontend design patterns and maintain high levels of cybersecurity Ideal Skills: - Strong experience in NextJS, Git, and Firebase - Proven track record with booking systems - Proficiency with email sending, such as Twilio - Familiarity with Google Calendar and PayPal APIs Project Brief: Build a responsive and accessible website with a modern yet familiar aesthetic for a rifle range in NextJS which has 3 pages: 1. Home page 2. Contact page 3. Booking page The rifle range has 7 lanes, where users ...
I am in need of a skilled developer who can create an AI Chatbot using Voiceflow. This chatbot is intended to provide sales assistance and should be integrated with social media platforms and messaging apps. Key Requirements: - Design the chatbot to answer frequently asked questions effectively - Develop the ability for the chatbot to collect customer information for lead generation Ideal Skills & Experience: - Proficient in building AI Chatbots with Voiceflow - Experience with integrating chatbots to social media platforms and messaging apps - Ability to design conversational flows that are effective in providing sales assistance - Familiarity with lead generation techniques and how to apply them to an AI Chatbot If you're confident in your ability to create an interac...
I need to create a console project in C# Net Framework that I can listen the data from an equipment Mindray BC-20s and / or BC-30s. Using Ethernet configuration and HL7. The data that comes from the clinical equipment needs to be save it on txt file. The configuration is using TCP/IP and I need - Port for every equipment Any questions? I made a console project but I could no be able to get the results from those equipments. I need a person who had been working with HL7.
I'm in need of an experienced developer to create a web application that will be capable of sending bulk messages through both text and WhatsApp. The primary function of the application will be to send bulk messages, so I'm looking for someone with a strong background in this area. Bulk Messaging Capability: Develop a feature to send bulk messages to both SMS and WhatsApp using the Twilio API. Web Application: Create a user-friendly web-based application connected to the my Twilio account for sending messages. Two-Way Communication: Implement functionality for two-way conversations with recipients. Target Audience: All target numbers belong to the USA. Bulk Message Definition: I've like 5k number's which I want to target. Twilio Number Checker: Devel...
I'm in need of a skillful and experienced app developer to create a user-friendly e-commerce application for both iOS and Android. The primary focus of the app will be E-commerce, with key features including Shopping Cart and User Profiles. Key Project Requirements: - Develop a native mobile application for both iOS and Android - Incorporate core E-commerce functionalities such as Shopping Cart and User Profiles - Ensure the app is intuitive and engaging for the end users Ideal Skills and Experience: - Proficiency in app development for both iOS and Android platforms - Strong background in E-commerce app development - Experience with integrating and customizing Shopping Cart and User Profile features - Ability to create user-friendly and visually appealing interfaces - Unde...
Monthly Google SEO - USA On page SEO and off page SEO
I'm urgently seeking a Flutter developer who can help bring my app idea to life. The project is for both Android and iOS. Key Features: - User login and registration system: Users will be able to create accounts and log in securely, we already have an api for that. - Push notifications: I need transactional notifications to be sent to users. These will include updates on orders and account activity. - Frontend Development: I have the design for the app ready. Your responsibility would be to translate this design into a functional frontend. - API Integration: The app needs to be connected to our existing API (Django rest framework). This is crucial for the app's functionality. Ideal Skills and Experience: - Proficient in Django: Our API I need ...
As a highly-technical individual running an N8N instance, I'm currently seeking a savvy OAuth expert to assist with the integration of Google Sheets. Key Responsibilities: - Import a limited volume of entries (less than 1000) from Google Sheets into N8N - Establish a consistent data syncing process between N8N and Google Sheets Ideal Candidates: - Have an extensive background working with Google Sheets and OAuth - Proven experience smoothly and efficiently accomplishing similar projects in the past I'm looking forward to hearing from candidates who can demonstrate their OAuth expertise and problem-solving aptitude in their application.
...of a Flutter developer that will receive compensation on a daily basis. To ensure maximum productivity and mutual benefit, I hope to find a professional who is comfortable and efficient with this form of payment schedule. Ideal Experience: - You must have a significant experience in Flutter development. I ask all interested candidates to provide necessary proofs of prior work and projects to confirm their expertise. Essential Skills: - Knowledge of Flutter is an absolute must for this role. - In addition to this, possessing skills in API integration would be a considerable advantage. This project promises an efficient payment method, great collaborative experience, and the opportunity to further hone your technical skills. I encourage all skilled Flutter developers wit...
We need DevOps Developer for Azure CICD bug fixing task. who can start work immediately.
I'm working with an API who giving the hash of a file, it returns a p7s digital sign in base64 who needs to be add it to the PDF dictionary. (It can be one or more signatures) What I want is, the ability to add the sign to the PDF in NodeJS (better if it's with typescript) and then open it in adobe acrobat and see the sign. I will provide the PDF sample, the hash of the file and the response of the API in base64 to be tested. Additionally I have an example in Java to better undestanding of the requeriments The flow of the file will be: 1. Give the hash and received the API response (this will be mocked) 2. The API response must be decoded (it's in base64) and add it to the PDF 3 A new PDF must be saved in the disk 4. When the new pdf is opened...
I'm looking for a skilled Python and JavaScript developer to assist with front-end and back-end development for a website and web application I'm working on. Key Responsibilities: - Assist with the front-end development using JavaScript to create a user-friendly and interactive interface. - Work on the back-end development using Python to ensure seamless functionality and data processing. - Collaborate with me to achieve the overall goals of building a compelling website and web application. Ideal Skills: - Strong expertise in Python and JavaScript. - Experience in front-end development using JavaScript. - Proficient in back-end development using Python. - Ability to work collaboratively and communicate effectively.
I am in need of an experienced AI developer with a strong background in machine learning, specifically in the context of developing algorithms for music programs. Key project details and requirements: - The primary goal of this project is to create an algorithm that can be integrated into a music program. - The algorithm should be able to perform beat detection and analysis, separate the voice from the music, and automatically generate lyrics as the song is played. Ideal candidate should have: - Proven experience in machine learning and AI development, with a specific focus on music-related projects. - Proficiency in developing algorithms for beat detection and analysis. - Skills in voice separation from music in real-time. - Capabilities in natural language processing for lyric g...
I'm in need of an experienced Flutter developer to complete a full-cycle project for an app - from UI design to development, testing, and debugging. The app will be a payment gateway integrated, cross-platform product, hence ideal for someone with experience in these areas. Key Requirements: - Proficiency in Flutter to create a smooth and efficient cross-platform app for Android and iOS. - Strong UI/UX design skills to ensure the app is easy to navigate and aesthetically pleasing. - Experience in testing and debugging to deliver a polished, high-quality product.
Java developer who can work with flutter. As requirements are to integrate Java sdk in small flutter print app. We are integrating new android printer with Java SDK in flutter is fully working and printing already but we need to change the SDK as we are upgrading android printer. If you have experience of integrating java sdk into flutter app come forward.
I need an experienced Laravel developer to integrate and manage the database for my existing project, www.getyourhomes.in. The task is not only basic CRUD operations but also extends to admin panel updates and AJAX call filters. - Database Management: You should be adept at advanced database management with stored procedures, triggers, and optimization. - Language Proficiency: Strong language skills in either Bengali or Hindi is essential. Your role would be crucial in improving the functionalities of my project. Prior experience in similar projects would be a bonus.
I'm looking for a skilled Laravel developer to help with some back end tasks specifically related to bug fixing and google2fa integration Task need to be done remotely. Key Responsibilities: - Identify and resolve bugs within the existing Laravel application, google2fa integration Required Communication: - I prefer to communicate through instant messaging for regular progress updates and issue discussions. Ideal Candidate: - Proven experience in Laravel development - Strong understanding of backend development - Proficiency in resolving bugs - Ability to communicate effectively via instant messaging
long term , full time flask developer needed to build ecommerce backend you should start right away should have proficiency in flask, jquery, ajax and mongodb budget INR 100 per hour, need to work for another 15 to 20 days
I'm looking for an expert web developer to implement a multilingual feature on my website, with automatic currency conversion capabilities. Below are the specifics: - **Language and Currency Conversion**: The developer should setup a language selector that corresponds with specific currencies just as it is on Footshop.pl. This will allow my website visitors to choose their preferred language and see prices in their local currencies. - **Currency Update Feature**: The currencies should be updated regularly to reflect the current exchange rates. You should be able to leverage both fixed, real-time, and custom conversion rates. - **G|Translate Service Integration**: I desire to have the translation service on my website powered by G|translate service. Ideal freelance...
I need a proficient Solidity and Web3 developer to help build a smart contract on the Ethereum network. The primary functionality of the contract is to facilitate fund transfers and sharing. Ideal Skills and Experience: - Solid experience in Ethereum smart contract development - Expertise in Solidity and libraries - Familiarity with test networks I need to create a smart contract and wallet connection using metamask. Here's an example; On this link, they only can donate using a credit card or debit card. I want to pay with eth test network (using metamask) and the smart-contract is; Person A needs 2000ETH for their project with a deadline of 30 days and share the profit 10% after 10 days of the project to reach the goal
As a burgeoning project in demand, we're in need of a Full Stack PHP Developer with a good command of both frontend and backend development. For our backend development, we prioritize: - Proficiency in PHP, MySQL & Laravel When it comes to the frontend, we value: - Experience with Javascript & Web Designing using HTML & CSS. Knowledge on VueJs will be Plus. We're specifically looking for someone at an intermediate level, who has: - A solid grasp of Javascript & PHP. We're excited to welcome a competent, committed developer to our team. Bring your A-game, and let's create something great together.
I am looking for a mobile app specialist who is fluent in Portuguese and skilled in developing apps for both iOS and Android platforms. The main purpose of this mobile app is to offer a matching service in a specific field. Ideal Skills and Experience Required: - Expertise in iOS and Android app development and publish - Expertise in flutter - Proficiency in Portuguese - Experience building service-oriented apps The app's primary function will be to match users based on specific criteria. A clear understanding of matching-based platforms is essential for this project. Potential freelancers should be confident and ready to contribute innovative ideas for the functionality and user interface of the app.